Americans Don't Speed?

I was reading this article in the NY Times about English hatred of cameras that have been posted all over the place to catch speed when I came on this quote that I had to share:

“It’s incredibly difficult to get to people to come to terms with slowing down here,” said Francis Ashton, the road safety manager for the city of Nottingham. “In the States, you have much slower speed limits, and there’s more of a culture of sticking to the speed limit.”

Either Mr. Francis hasn't spent much time on our interstate highway system, or we're really not as bad as I thought. Huh.